28021329

素因数分解:

$3^3\times 7^1\times {\mathrm{173}}^1\times {\mathrm{857}}^1$

素因数の和:1046

約数の個数: 32

約数和(自身を含む): 47773440

約数和(自身を除く): 19752111

約数列:

[1, 3, 7, 9, 21, 27, 63, 173, 189, 519, 857, 1211, 1557, 2571, 3633, 4671, 5999, 7713, 10899, 17997, 23139, 32697, 53991, 148261, 161973, 444783, 1037827, 1334349, 3113481, 4003047, 9340443, 28021329]

約数ペア:

[(1, 28021329), (3, 9340443), (7, 4003047), (9, 3113481), (21, 1334349), (27, 1037827), (63, 444783), (173, 161973), (189, 148261), (519, 53991), (857, 32697), (1211, 23139), (1557, 17997), (2571, 10899), (3633, 7713), (4671, 5999)]